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| 1 | Underwater hybrid near-field acoustical holography based on the measurement of vector hydrophone array显示文摘Hybrid near-field acoustical holography(NAH) is developed for reconstructing acoustic radiation from a cylindrical source in a complex underwater environment. In hybrid NAH,we combine statistically optimized near-field acoustical holography(SONAH) and broadband acoustical holography from intensity measurements(BAHIM) to reconstruct the underwater cylindrical source field. First,the BAHIM is utilized to regenerate as much acoustic pressures on the hologram surface as necessary,and then the acoustic pressures are taken as input to the formulation implemented numerically by SONAH. The main advantages of this technology are that the complex pressure on the hologram surface can be reconstructed without reference signal,and the measurement array can be smaller than the source,thus the practicability and efficiency of this technology are greatly enhanced. Numerical examples of a cylindrical source are demonstrated. Test results show that hybrid NAH can yield a more accurate reconstruction than conventional NAH. Then,an experiment has been carried out with a vector hydrophone array. The experimental results show the advantage of hybrid NAH in the reconstruction of an acoustic field and the feasibility of using a vector hydrophone array in an underwater NAH measurement,as well as the identification and localization of noise sources. | HU Bo,YANG DeSen & SUN Yu College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150001,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，6： | 5 |
| 2 | Research on sound wave receiving theory of inertial sphere type vector hydrophone显示文摘惯性的范围类型向量水中听音器的收到的理论的健全压力波浪和粒子速度波浪被学习。与共同震荡基于粒子速度水中听音器的测量原则范围,在一个自由地动人的声学的 planewave 领域里收到反应到僵硬范围和有弹性的范围的声波的数学表达式被导出,并且在速度水中听音器和它的几何尺寸和密度的频率反应曲线之间的关系被分析。根据收到球形的收到的变换器的理论的声波,另外,向量水中听音器收到反应的健全压力的数学表达式被导出,并且在收到向量水中听音器和参数的系数的压力之间的粒子速度水中听音器和关系的表面上的压力分发的法律例如收到的表面的尺寸,粒子速度水中听音器,布局位置和 rad 的半径收到向量水中听音器的理论的声波的分析方法被建立,它为向量水中听音器的设计和开发打理论基础。 | SHI Shengguo YANG Desen HONG Lianjin | 2010 | Chinese Journal of Acoustics2010，29，4： | 3 |
| 3 | Direction-of-arrival estimation for a uniform circular acoustic vector-sensor array mounted around a cylindrical baffle显示文摘This work investigates the direction-of-arrival(DOA) estimation for a uniform circular acoustic Vector-Sensor Array(UCAVSA) mounted around a cylindrical baffle.The total pressure field and the total particle velocity field near the surface of the cylindrical baffle are analyzed theoretically by applying the method of spatial Fourier transform.Then the so-called modal vector-sensor array signal processing algorithm,which is based on the decomposed wavefield representations,for the UCAVSA mounted around the cylindrical baffle is proposed.Simulation and experimental results show that the UCAVSA mounted around the cylindrical baffle has distinct advantages over the same manifold of traditional uniform circular pressure-sensor array(UCPSA).It is pointed out that the acoustic Vector-Sensor(AVS) could be used under the condition of the cylindrical baffle and that the UCAVSA mounted around the cylindrical baffle could also combine the anti-noise performance of the AVS with spatial resolution performance of array system by means of modal vector-sensor array signal processing algorithms. | YANG DeSen ZHU ZhongRui | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，12： | 3 |
| 4 | Underwater moving noise source identification based on hybrid near-field acoustical holography显示文摘Near-field acoustical holography (NAH) is a powerful tool for identifying noise sources and visualizing acoustic field. By recording the acoustic pressures in the near-field, the acoustic quantities in the whole 3-D field can be reconstructed and predicted. However, the current theory of NAH is not applicable to tracking large scale moving noise sources. Therefore, the hybrid near-field acoustical holography is developed for reconstructing acoustic radiation, which is derived from statistically optimized near-field acoustical holography (SONAH) and moving frame acoustical holography (MFAH). The theoretical formulation is systematically addressed. This method enables us to visualize the noise generated by moving noise sources and the measurement array can be smaller than the source, which improves the practicability and efficiency of this technology. Numerical simulations are presented to demonstrate the advantages of hybrid NAH. Then, two experiments have been carried out with a line array of hydrophones. The results of simulations and experiments support the proposed theory, which shows the advantage of hybrid NAH in the reconstruction of an acoustic field in an underwater holographic measurement. | HU Bo YANG DeSen SHI ShengGuo SUN Yu | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，9： | 2 |
| 5 | Near fields scattered by an underwater finite cylindrical baffle显示文摘In this work,acoustic vector characteristics of near fields scattered by an underwater finite cylindrical baffle are investigated theoretically and experimentally.The analytic expressions for the scattered pressure and particle velocity are derived using the elastic thin shell theory.Calculations are presented for the scattered near fields of the pressure,the particle velocity and the intensity.It is found that the pressure and the particle velocity fields near the surface of the cylindrical baffle are characterized by complex interference structure,particle velocity directions and the source bearings are not consistent.The phase difference between the pressure and the particle velocity is not zero and the intensity vector does not reflect the sound bearings.It can be noted that the distortions of the fields will make the original vector signal processing method based on the free space assumption be no longer applicable in the presence of the cylindrical baffle.These results can serve as a basis of the application for the acoustic vector sensor on board. | YANG DeSen ZHU ZhongRui | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，9： | 2 |
| 6 | Investigation on bubble dynamics characteristics and power spectral variation in acoustic field显示文摘Based on Keller-Miksis model,the influences of multiple control parameters,such as acoustic pressure amplitude,acoustic frequency and bubble radius at rest,on the complicated dynamics characteristics of nonlinear bubble oscillation driven by acoustic wave are discussed by utilizing a variety of numerical analysis methods,and the restrictive relationships among different parameters are analyzed.It is shown that chaotic state can occur only in the condition of all of the parameters in the suitable threshold,as the same time,chaotic state is the result of interaction of multiple control parameters.Furthermore,the power spectral expansion and energy conversion are existed in this nonlinear system.It is certified that the stronger acoustic pressure amplitude,the greater the sub-harmonic energy,besides,the energy attenuation of fundamental harmonic is also much greater. | YANG Desen SHI Jie SHI Shengguo ZHANG Haoyang JIANG Wei JIN Shiyuan | 2013 | Chinese Journal of Acoustics2013，32，2： | 1 |
| 7 | Alcohol consumption and alcohol-related problems:Chinese experience from six area samples,1994显示文摘 | Hao Wei Yang Desen Xiao Shuiyuan | 1999 | Addiction1999，94，10： | 1 |
| 8 | Characterization of two chimeric sesterterpene synthases from a fungal symbiont isolated from a sesterterpenoid-producing Lamiaceae plant Leucosceptrum canum显示文摘Two chimeric sesterterpene synthases(Aa TPS1 and Aa TPS2)were functionally characterized from Alternaria alternata MB-30 isolated from the leaves of a sesterterpenoid-producing Lamiaceae plant Leucosceptrum canum.Aa TPS1 generated a 5/8/6/5 tetracyclic sesteraltererol(1)and its absolute stereochemistry was determined by X-ray crystallographic analysis of its derivative 10,11-epoxysesteraltererol(2),which enabled revision of the absolute configuration of C7 of sesterfisherol produced by Nf SS and PTTS014 characterized previously and its derivative 10,11-epoxysesterfisherol.Aa TPS2 produced a 5/15 bicyclic preterpestacin I(3).Site-directed mutagenesis suggested that F192 in Aa TPS1 was likely involved in controlling of the hydroxylation of C12,and eight amino acids were important for the enzyme activity of Aa TPS1 and Aa TPS2.The engineered Escherichia coli and Saccharomyces cerevisiae strains were constructed for the productions of compounds 1 and 3,and the highest titer of compound 1 reached 62.3 mg/L in shake-flask culture.Both compounds 1 and 2 showed anti-adipogenic activity. | Desen Li Minjie Yang Rongfang Mu Shihong Luo Yuegui Chen Wenyuan Li An Wang Kai Guo Yan Liu Shenghong Li | 2023 | Chinese Chemical Letters2023，34，1： | 1 |
| 9 | Wideband high-resolution direction of arrival estimation method based on the pressure-velocity combined processing using the acoustic vector sensor array显示文摘以便解决 DOA (到达的方向) 的问题评价在水下远宽带目标,一个新奇协调 signal-subspace 方法基于十字光谱压力的矩阵和用声学的向量传感器数组(AVSA ) 的粒子速度在这份报纸被建议。建议方法与在把声学的向量传感器(AVS ) 的粒子速度信息用作一个独立人士的基于的 DOA 评价方法穿的存在 AVSA 不同元素。也就是,它完全基于压力和粒子速度的联合信息处理 P-V 生气光谱,在各向同性的噪音比存在方法有更好的 DOA 评价性能地。由理论分析,基于 P-V 集中原则和 eigendecomposition 理论的两个交叉光谱矩阵是 given.At 一样的时间,为数字察觉也是的来源的相应标准有从湖试用的数据的 presented.Computer 模拟证明建议方法是有效的并且显然超过存在在分辨率的方法和在低 Signal-to-Noise 比率( SNR )的情况中的精确性。 | BAI Xingyu YANG Desen ZHAO Chunhui | 2007 | Chinese Journal of Acoustics2007，26，1： | 0 |
| 10 | Unraveling the serial glycosylation in the biosynthesis of steroidal saponins in the medicinal plant Paris polyphylla and their antifungal action显示文摘Sugar-sugar glycosyltransferases play important roles in constructing complex and bioactive saponins.Here,we characterized a series of UDP-glycosyltransferases responsible for biosynthesizing the branched sugar chain of bioactive steroidal saponins from a widely known medicinal plant Paris polyphylla var.yunnanensis.Among them,a 2'-O-rhamnosyltransferase and three 6'-O-glucosyltrasferases catalyzed a cascade of glycosylation to produce steroidal diglycosides and triglycosides,respectively.These UDP-glycosyltransferases showed astonishing substrate promiscuity,resulting in the generation of a panel of 24 terpenoid glycosides including 15 previously undescribed compounds.A mutant library containing 44 variants was constructed based on the identification of critical residues by molecular docking simulations and protein model alignments,and a mutant UGT91AH1^(Y187A)with increased catalytic efficiency was obtained.The steroidal saponins exhibited remarkable antifungal activity against four widespread strains of human pathogenic fungi attributed to ergosterol-dependent damage of fungal cell membranes,and 2'-O-rhamnosylation appeared to correlate with strong antifungal effects.The findings elucidated the biosynthetic machinery for their production of steroidal saponins and revealed their potential as new antifungal agents. | Yuegui Chen Qin Yan Yunheng Ji Xue Bai Desen Li Rongfang Mu Kai Guo Minjie Yang Yang Tao Jonathan Gershenzon Yan Liu Shenghong Li | 2023 | Acta Pharmaceutica Sinica B2023，13，11： | 0 |
| 11 | YBa_(2)Cu_(3)O_(7-x) Superconducting Thin Films Grown on CaNdA1O_(4)(100) Substrates显示文摘We report the fabrication of high temperature superconducting YBa_(2)Cu_(3)O_(7-x) thin films on CaNdA1O_(4)(100) substrate by pulsed laser deposition.Films have excellent features.X-ray diffraction patterns show that thin films are epitaxial with c-axis orientation normal to the surface of su bstrate.The four-terminal measurements indicate the zero resistance temperature of 92.1 K,and transition width of 0.7K,the critical current density of 3×10^(6)A/cm^(2)at 77K and under zero magnetic field. | XU Shifa ZHOU Yueliang LÜHuibin CUI Dafu CHEN Zhenghao YANG Guozhen TIAN Yongjun LIU Junzheng LI Lin CHANG Yingchuan HOU Desen FAN Hui ZHANG Zuren | 1994 | Chinese Physics Letters1994，11，5： | 0 |
| 12 | The Theory and Experiment of Parametric Amplification of Three-wave Nonlinear Interaction in Water显示文摘 | LAN Chaofeng YANG Desen LU Di GUO Xiaoxia ZHOU Zhonghai | 2013 | Chinese Journal of Electronics2013，22，2： | 0 |
| 13 | Genetic Mineralogy of the Pyrite and Quartz in Dongping Gold Deposit, Hebei Province: Implications for Gold Prospecting显示文摘Located at the boundary of Chongli county, Chicheng county and Xuanhua county of Heibei province, the Dongping gold deposit is genetically affiliated to the late Jurassic- early Cretaceous volcanics and intrusives. The ore body is quartz vein- and alteration-type and pyrite and quartz are the dominant gold-bearing minerals. | XU Hong YANG Lijun ZHANG Desen GAO Shen | 2013 | 矿物学报2013，33，S1： | 0 |
| 14 | Multipath matching pursuit using a cross-validation technique for sparse direction-of-arrival estimation with an acoustic vector array显示文摘High-resolution direction-of-arrival(DOA)estimations and the starboard ambiguity of moving underwater targets have always been key issues in underwater acoustic array signal processing.Compared with sound pressure arrays,vector arrays have natural advantages with respect to solving the starboard ambiguity problem and obtaining higher processing gains.Traditional high-resolution DOA estimation methods such as Capon have disadvantages such as being unable to resolve coherent sources,requiring multiple snapshot processing,and being sensitive to array manifold errors.High-resolution DOA estimation and the starboard ambiguity of moving underwater targets have always been challenging research topics.On one hand,maneuvering underwater targets reduce the coherence time of the received signals,which ultimately leads to poor performance when using high-resolution DOA estimation technologies based on the covariance matrix of the received signal.On the other hand,traditional DOA estimation technologies based on sound pressure arrays have the problem of port and starboard ambiguity,which can be solved by maneuvering the sonar platform.However,maneuvering the sonar platform can impair the coherence of the received signal,on which some algorithms rely.This approach greatly limits the combat effectiveness and performance of the platform.Given the aforementioned problems and taking advantage of the target sparsity,a cross-validation multipath matching pursuit technique based on the sparse DOA estimation of an acoustic vector array is proposed in this article for sonar observations.The proposed algorithm uses cross-validation technology to achieve a sparse DOA estimation with an unknown number of targets in a sonar observation scene.Compared with the conventional acoustic vector array-based Capon algorithm,the proposed algorithm can achieve a sparse DOA estimation and high-resolution capability with small numbers of snapshots or even single snapshots.The effectiveness of the proposed algorithm is verified via simulations and sea trial data processing. | TAN Peng HU Bo ZHANG Youwen WU Yuquan YANG Desen | 2023 | Chinese Journal of Acoustics2023，42，2： | 0 |
| 15 | Robust direction-of-arrival estimation method with high accuracy for single vector sensor显示文摘The phase errors among the components of a single acoustic vector sensor cause the direction-of-arrival(DOA) estimation error of the existing methods.In order to address this issue,a DOA estimation method is proposed,which is robust to the phase errors.The proposed method first utilizes the Hadamard product of the principal eigenvector of the covariance matrix of the received signal by the single vector sensor and its conjugate vector to construct the spatial spectrum in order to estimate the DOA of the underwater target.Since the Hadamard product eliminates the phase errors,this estimation is independent of the phase errors.However,it is ambiguous.Afterwards,the phase-error estimate is explored to eliminate the ambiguity and get the correct DOA estimate.The proposed method performs independently of the phase errors and obtains high accuracy.The simulation results and the experimental result demonstrate the proposed method is robust to the phase errors.Furthermore,in the presence of the phase errors,it performs better than the average acoustic intensity method,the CAPON method,and the MUSIC method,in terms of estimation accuracy.In addition,the simulation results indicate that the estimation accuracy of the proposed method approaches to the Cramer-Rao bound(CRB). | LIU Aifei YANG Desen SHI Shengguo LI Sichun LI Ying | 2021 | Chinese Journal of Acoustics2021，40，1： | 0 |
| 16 | Geoacoustic inversion in shallow water by matching the vertical-particle-velocity显示文摘Bottom acoustic parameters are vital for studying sound propagation properties and their applications in ocean waveguides.The propagation properties and normal-mode structure of vertical-particle-velocity in an ocean environment with a thermocline in shallow water were studied in the Yellow Sea.The Results reveal that high energy of the verticalparticle-velocity exists at most depth except for near-bottom depth when the source and receiver are both below the thermocline.Moreover,high-order modes contribute more to the verticalparticle-velocity and vertical-particle-velocity-based matched-field-processing(MFP)inversion method can be highly sensitive to bottom parameters compared to sound pressure.Furthermore,the effects of the bottom absorption coefficient on the vertical-particle-velocity-based MFP inversion method are studied.It is shown that accurate sound velocity,density and water depth can be obtained only when the bottom absorption coefficient is set close to the real value during MFP.By using the vertical-particle-velocity signals recorded by vector hydrophones during the experiment and determining the bottom sound velocity,bottom density and water depth under different bottom absorption coefficients,stable inversion results were obtained.The transmission losses of the sound pressure at different ranges were used to invert the bottom absorption coefficients.The transmission losses of sound pressure calculated using the inverted bottom parameters are consistent with the experimental results obtained from the pressure hydrophones in the experiment. | TAN Peng SUN Mei QIN Jixing YANG Desen | 2023 | Chinese Journal of Acoustics2023，42，3： | 0 |
| 17 | Underwater patch near-field acoustical holography based on particle velocity and vector hydrophone array显示文摘One-step patch near-field acoustical holography(PNAH) is a powerful tool for identifying noise sources from the partially known sound pressure field.The acoustical property to be reconstructed on the surface of interest is related to the partially measured pressure on the hologram surface in terms of sampling and bandlimiting matrices,which cost more in computation.A one-step procedure based on measuring of the normal component of the particle velocity is described,including the mathematical formulation.The numerical simulation shows that one-step PNAH based on particle velocity can obtain more accurately reconstructed results and it is also less sensitive to noise than the method based on pressure.These findings are confirmed by an underwater near-field acoustical holography experiment conducted with a vector hydrophone array.The experimental results have illustrated the high performance of one-step PNAH based on particle velocity in the reconstruction of sound field and the advantages of a vector hydrophone array in an underwater near-field measurement. | HU Bo YANG DeSen LI SiChun SUN Yu MO ShiQi SHI ShengGuo | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，11： | 0 |
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